Abstract: “The use of unconventional water sources, e.g., reusing treated wastewater and drainage water, could be an important water source for agriculture irrigation in order to overcome the water scarcity in Egypt. In this study, the effect of using submerged biofilters on water quality in the Bilbeas drain as a case study of polluted drains in Egypt is investigated. This study showed that the reuse of treated wastewater and drainage water for irrigation is an attractive option to alleviate water scarcity in Egypt. Furthermore, the case study in the Bilbeas drain showed that using submerged biofilters increased the removal efficiency of the chemical oxygen demand to 40.8% in comparison with natural self-purification, which was 9.8%”

Keywords: Treated Wastewater; Drainage Water; Submerged biofilter; Agricuture Irrigation; Eg